Gold eased on Wednesday, reversing a brief move higher after the European Central Bank fed cash-hungry commercial banks over half a trillion euros in cheap loans, further greasing the wheels of the financial system, but depressing the value of the euro.

The ECB said it had allotted nearly 530 billion euros in what many believe to be the second, and last, such operation to provide liquidity and increase lending to businesses and individuals to prevent a full-blown recession.

The three-year loans are the ECB's latest attempt to combat the debt crisis, which has thrust the single European currency bloc to the verge of recession, and adds to the environment of loose monetary policy and ample liquidity that tends to benefit gold.

Gold's relatively tight link with the euro means it is likely to move in response to fluctuations in the currency rather than to fluctuations in investor risk appetite right now.

Spot gold edged up 0.1 percent on the day to $1,785.46 an ounce, bringing the gains for February to 2.6 percent, which would mark a second monthly gain, but the continued failure of the price to breach $1,800 an ounce could prompt some investors to book profits, analysts said.

The (amount allotted) was pretty much in line with expectations, so neither gold nor euro/dollar have done very much on the back of it after an initial reaction, as it's in the price, Credit Suisse analyst Tom Kendall said.

$1,800 is the obvious target, but I wouldn't be surprised to see it print at 1,800 and come off and consolidate, having done that, he said.

Since the ECB's debut three-year allotment in early December, the gold price has risen by around 4.5 percent, compared with a near-17 percent gain in the price of silver.

INFLATION RISK

The scale of the uptake of funds by banks was broadly in line with expectations and the key question for policymakers and financial markets alike is how much of that money will make its way into the system and plump up flagging growth and what risk such a rise in liquidity means for inflationary pressures.

For gold low interest rates makes it less attractive for producers to sell forward and kill the rally. The loose monetary policy also creates the specter of inflation down the line so it's gold positive, Ross Norman, director at Sharps Pixley said.

Low interest rates benefit gold because its own lack of inherent yield means that the premium forfeited by owning the metal rather than yield- or dividend-bearing stocks, bonds or currencies shrinks.

In other gold-related news, Iran said it would take payment from its trading partners in bullion instead of dollars, according to Iranian state news agency IRNA, which quoted the central bank governor on Tuesday.

European grain traders reported earlier this month that Iran had made payment for grain shipments using gold and oil, as payment in dollars into Iranian banks has become increasingly difficult following the imposition of Western sanctions on Tehran.

There has been no discernible impact on the gold price so far from Tehran's use of bullion as a method of payment.

When you look at the size of speculative flows in gold compared to physical, I don't think it would have that much of an impact, Saxo Bank senior manager Ole Hansen said.

Gold is still struggling, we've seen a pickup in platinum and silver was flying yesterday and yet gold is still not able to break $1,800. It will eventually, but if this (story) was the one to do it, it would have happened already, he said.

The price of silver, which has gained more than 12 percent this month, is at its highest since September, as speculative investment has given the market a boost.

Silver was last up 0.6 percent on the day at $37.12 an ounce. Platinum was up 0.5 percent at $1,723.24 an ounce, set for a near-9 percent rally this month on the back of supply disruption from top producer South Africa.

Impala Platinum (IMPJ.J), the world's second-largest platinum miner, said on Tuesday it has lost 100,000 ounces in production because of an illegal strike at its key Rustenburg facility and lost 2 billion rand ($263.66 million).

Palladium was down 0.5 percent at $715.72 an ounce, set for a near-5 percent rally this month.